BCP 10PCS Different Size Mini Micro Twist Drill Bits and 1 Pin Vise with 2pcs Double Ended Chucks 10pcs Drill bit size are 0.8mm, 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm,2.2mm, 2.5mm, 2.8mm, 3mm Two double ended collets, one is instored in screw chuck, and the other is stored in the handle of the pin vise Pin vice is useful for tool-making, model making and hobbies Free wheeling head Pin vice size : 3.5''